feat(studyset): a studyset's marker says what the instance sees of it (ADR 0019)

The developer's decision of 21 Oct, on the library's cards and the
studyset's Share in its action row alike:
- a lock: private, end-to-end encrypted;
- an open lock: readable by the instance, not published;
- a globe: published.

The lock and the open lock open one dialog saying what that means and
changing it (Make non-private; Make private, or Publish…, which opens the
Publish sheet, while it isn't private); a topic's dialog says its privacy
is its tree's. The globe opens the Publish sheet, whose status for a
studyset not published now says so ("Not published") with an open lock,
as "Private" means something else now. Texts in en and de.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

apps/learn/halkyon_learn_flutter/test/feature/studyset/widget/library_screen_test.dart

@@ -16,6 +16,7 @@ import 'package:halkyon_learn_flutter/src/feature/studyset/model/studyset_conten
 import 'package:halkyon_learn_flutter/src/feature/studyset/widget/deleted_studyset_card.dart';
 import 'package:halkyon_learn_flutter/src/feature/studyset/widget/studyset_card.dart';
 import 'package:halkyon_ui/halkyon_ui.dart';
+import 'package:lucide_icons_flutter/lucide_icons.dart';
 import 'package:material_ui/material_ui.dart';
 
 import '../../../support/fake_card_gateway.dart';
@@ -85,6 +86,7 @@ void main() {
     DateTime? archivedAt,
     DateTime? starredAt,
     String? publishedAt,
+    bool private = false,
   }) => gateway.receiveRemoteChange(
     id,
     encodeStudysetPayload(
@@ -100,6 +102,7 @@ void main() {
     ),
     archivedAt: archivedAt,
     starredAt: starredAt,
+    isPrivate: private,
   );
 
   /// [finder] within the card of the studyset titled [title].
@@ -796,11 +799,13 @@ void main() {
       expect(onCard('Kanji', find.text('By @alice')), findsOneWidget);
     });
 
-    testWidgets('a lock while private, a globe once out on Explore, as the '
-        'instance says', (tester) async {
+    testWidgets('a lock while private, an open lock while the instance can '
+        'read it and it is not published, a globe once out on Explore, as '
+        'the instance says', (tester) async {
       stored('japanese', 'Japanese');
       stored('kanji', 'Kanji');
       stored('kana', 'Kana');
+      stored('diary', 'Diary', private: true);
       final store = MemoryPublishedStore();
 
       await showLibrary(
@@ -815,9 +820,25 @@ void main() {
         publishedStore: store,
       );
 
+      expect(
+        onCard('Japanese', find.byIcon(LucideIcons.globe)),
+        findsOneWidget,
+      );
       expect(onCard('Japanese', find.byTooltip('Public')), findsOneWidget);
-      expect(onCard('Kanji', find.byTooltip('Private')), findsOneWidget);
-      expect(onCard('Kana', find.byTooltip('Private')), findsOneWidget);
+      expect(
+        onCard('Kanji', find.byIcon(LucideIcons.lockOpen)),
+        findsOneWidget,
+      );
+      expect(
+        onCard('Kanji', find.byTooltip('Not private, not published')),
+        findsOneWidget,
+      );
+      expect(
+        onCard('Kana', find.byTooltip('Not private, not published')),
+        findsOneWidget,
+      );
+      expect(onCard('Diary', find.byIcon(LucideIcons.lock)), findsOneWidget);
+      expect(onCard('Diary', find.byTooltip('Private')), findsOneWidget);
       // Remembered for when the instance can't be reached.
       expect(store.kept, {'japanese'});
     });
@@ -835,21 +856,74 @@ void main() {
       );
 
       expect(onCard('Japanese', find.byTooltip('Public')), findsOneWidget);
-      expect(onCard('Kanji', find.byTooltip('Private')), findsOneWidget);
+      expect(
+        onCard('Kanji', find.byTooltip('Not private, not published')),
+        findsOneWidget,
+      );
     });
 
-    testWidgets('the lock opens the Publish sheet', (tester) async {
+    testWidgets('the open lock says the instance can read it, and leads to '
+        'the Publish sheet or makes it private', (tester) async {
       stored('japanese', 'Japanese');
+      gateway.canMakePrivate = true;
       await showLibrary(tester);
 
-      await tester.tap(onCard('Japanese', find.byTooltip('Private')));
+      await tester.tap(
+        onCard('Japanese', find.byTooltip('Not private, not published')),
+      );
+      await tester.pumpAndSettle();
+      expect(find.text("“Japanese” isn't private"), findsOneWidget);
+      await tester.tap(find.text('Publish…'));
       await tester.pumpAndSettle();
-
-      expect(find.text('Publish'), findsOneWidget);
       expect(
         find.text('Sign in to have a public profile and publish.'),
         findsOneWidget,
       );
+      await tester.tapAt(Offset.zero);
+      await tester.pumpAndSettle();
+
+      await tester.tap(
+        onCard('Japanese', find.byTooltip('Not private, not published')),
+      );
+      await tester.pumpAndSettle();
+      await tester.tap(find.widgetWithText(FilledButton, 'Make private'));
+      await tester.pump();
+      await tester.pump();
+      expect(gateway.privacyChanges, [('japanese', true)]);
+    });
+
+    testWidgets('the lock says it is private, offers no publishing, and makes '
+        'it non-private', (tester) async {
+      stored('diary', 'Diary', private: true);
+      await showLibrary(tester);
+
+      await tester.tap(onCard('Diary', find.byTooltip('Private')));
+      await tester.pumpAndSettle();
+      expect(find.text('“Diary” is private'), findsOneWidget);
+      expect(find.text('Publish…'), findsNothing);
+      await tester.tap(find.widgetWithText(FilledButton, 'Make non-private'));
+      await tester.pump();
+      await tester.pump();
+
+      expect(gateway.privacyChanges, [('diary', false)]);
+    });
+
+    testWidgets('the globe opens the Publish sheet', (tester) async {
+      stored('japanese', 'Japanese');
+      await showLibrary(
+        tester,
+        identified: true,
+        publishing: FakePublishGateway(
+          publications: {'japanese': publication()},
+        ),
+        publishedStore: MemoryPublishedStore({'japanese'}),
+      );
+
+      await tester.tap(onCard('Japanese', find.byTooltip('Public')));
+      await tester.pumpAndSettle();
+
+      expect(find.text('Publish'), findsOneWidget);
+      expect(find.textContaining('halkyon.eu/@raisondetredev'), findsWidgets);
     });
   });
 }